If you want all your clients to use the No Sounds sound scheme, I would configure the default profile, so that new users get the No Sounds sound scheme.
For existing users, apply the following NoSounds.reg file:
You can include this entry in a logon script, or you can use tip 4195 to apply it.
NOTE: The user will have to log off and log on for the setting to become effective.
NOTE: You can also use tip 4195 to apply the change to the default profile, by using the following registry key: